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<p>To enhance the surface quality of curved workpieces and achieve smooth surfaces, a high-temperature abrasive test rig was developed based on the principle of gas–solid two-phase flow. Using CFD-DEM, a numerical simulation of different pressures in the abrasive pool was carried out. The optimum machining parameters were determined by orthogonal test and range analysis. The surface morphology of the workpiece was analyzed before and after the orthogonal experimental design. The simulation results show that the abrasive distribution is uniform, the normal force and tangential force act on the workpiece surface, and the abrasive’s cutting efficiency is improved. The experimental results demonstrate that the workpiece’s surface roughness (Ra) decreased from 1.335 to 0.347 µm. The optimal parameter combination for the polished curved surface workpiece was A<sub>2</sub>B<sub>2</sub>C<sub>2</sub>D<sub>3</sub>. Surface morphology analysis reveals that orthogonal experiments indicate that the material removal rate for convex surfaces is faster than that for concave surfaces. At a temperature of 100 °C, the maximum Vickers hardness reaches&#xa0;185.7 HV. This study is of great significance as a guide for abrasive polishing.</p>

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Research on the processing characteristics of curved surface workpieces in a high-temperature abrasive pool based on the principle of gas-solid two-phase flow

  • 期刊论文

  • 发表日期：

    2025年7月29日

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  • Qianjian Guo,
  • He Gao,
  • Wei Yuan,
  • Jinyu Wang,
  • Baotao Chi,
  • Fei Li

摘要

To enhance the surface quality of curved workpieces and achieve smooth surfaces, a high-temperature abrasive test rig was developed based on the principle of gas–solid two-phase flow. Using CFD-DEM, a numerical simulation of different pressures in the abrasive pool was carried out. The optimum machining parameters were determined by orthogonal test and range analysis. The surface morphology of the workpiece was analyzed before and after the orthogonal experimental design. The simulation results show that the abrasive distribution is uniform, the normal force and tangential force act on the workpiece surface, and the abrasive’s cutting efficiency is improved. The experimental results demonstrate that the workpiece’s surface roughness (Ra) decreased from 1.335 to 0.347 µm. The optimal parameter combination for the polished curved surface workpiece was A2B2C2D3. Surface morphology analysis reveals that orthogonal experiments indicate that the material removal rate for convex surfaces is faster than that for concave surfaces. At a temperature of 100 °C, the maximum Vickers hardness reaches 185.7 HV. This study is of great significance as a guide for abrasive polishing.